i have a ideal isar m30100 combi and, led diagnostic display is flashing LF,which in the manual indicates to replace the detection electrode which i have done.
but LF is still flashing in the diagnostic display and the boiler is still not igniting.can anyone give me any advise
as to what else i can do ?

stak, December 2010

You've wasted money already then.

Try seeing if the condense is unfrozen and the gas is on and available, loads cheaper

Carefree, December 2010